CVE-2021-0287
Juniper Networks Junos OS: SR-ISIS MPLS Denial of Service Vulnerability
Description
In a Segment Routing ISIS (SR-ISIS)/MPLS environment, on Juniper Networks Junos OS and Junos OS Evolved devices, configured with ISIS Flexible Algorithm for Segment Routing and sensor-based statistics, a flap of a ISIS link in the network, can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued link flaps will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 19.4 versions prior to 19.4R1-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; Juniper Networks Junos OS Evolved: 20.3-EVO versions prior to 20.3R2-EVO; 20.4-EVO versions prior to 20.4R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO.
INFO
Published Date :
July 15, 2021, 8:15 p.m.
Last Modified :
Oct. 25, 2021, 3:20 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-0287.
| URL | Resource |
|---|---|
| https://kb.juniper.net/JSA11189 | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-0287 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-0287 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CPE Deprecation Remap by [email protected]
Oct. 25, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.3:r1:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.3:r1:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Oct. 23, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.3:-:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.3:-:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Oct. 23, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:juniper:junos_evolved:20.4:r1-s1:*:*:*:*:*:* OR *cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:* -
Initial Analysis by [email protected]
Jul. 27, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:M/Au:N/C:N/I:N/A:C) Changed Reference Type https://kb.juniper.net/JSA11189 No Types Assigned https://kb.juniper.net/JSA11189 Vendor Advisory Added CWE NIST CWE-754 Added CPE Configuration OR *cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r2-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:19.4:r3-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.3:-:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.3:r1:*:*:*:*:*:* *cpe:2.3:o:juniper:junos_evolved:20.4:r1-s1:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 15, 2021
Action Type Old Value New Value Changed Description In a Segment Routing ISIS (SR-ISIS)/MPLS environment, on Juniper Networks Junos OS and Junos OS Evolved devices, configured with ISIS Flexible Algorithm for Segment Routing and sensor-based statistics, a flap of a ISIS link in the network, can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued link flaps will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 19.4 versions prior to 19.4R1-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; Juniper Networks Junos OS Evolved: 20.3-EVO versions prior to 20.3R2-EVO; 20.4-EVO versions prior to 20.4R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO. In a Segment Routing ISIS (SR-ISIS)/MPLS environment, on Juniper Networks Junos OS and Junos OS Evolved devices, configured with ISIS Flexible Algorithm for Segment Routing and sensor-based statistics, a flap of a ISIS link in the network, can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued link flaps will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 19.4 versions prior to 19.4R1-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; Juniper Networks Junos OS Evolved: 20.3-EVO versions prior to 20.3R2-EVO; 20.4-EVO versions prior to 20.4R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-0287 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-0287
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.23101
percentile